Ronaldo crosses into Rafa with the final roll of the dice and the substitute tries to chest it into Bernardo Silva's path, but it's too short.
FULL-TIME: PORTUGAL 0-0 UKRAINE.
90' +3
What drama! Portugal are screaming for a penalty after Sousa fell to the ground in the box while tussling with Mykolenko to connect with Ronaldo's low cross, but the referee is having none of it!
90' +1
Ronaldo leaps highest to connect with a Carvalho cross, but his header from the back post is directed straight at Pyatov and he catches it easily.
90'
Sousa is the latest Portuguese player to get a shot away, but it's unsurprising to see Pyatov make a comfortable save. He was never going to let that beat him.
89'
Carvalho takes responsibility and tries to test Pyatov with a powerful right-footed shot from outside the box, but it goes some distance wide.
87'
João Mário enters the game and replaces João Moutinho.
V. Buialskyi enters the game and replaces Y. Konoplanka.
West Ham's on-loan midfielder Joao Mario comes on for Moutinho in Santos' final change.
Buyalskiy wins his second Ukraine cap as a replacement for Konoplyanka.
86'
T. Stepanenko gets yellow.
Stepanenko is the first name in the book and he's shown a yellow card for a cynical foul.
82'
Ronaldo attempts a very ambitious shot from distance, but it takes a deflection and goes out for an 18th Portugal corner.
Moraes has taken a slight knock to the head while challenging Pepe for an aerial ball, but he's up again and able to play on.
81'
Mykolenko gives away yet another Portugal corner - their 17th of the game compared to one for Ukraine - but Moutinho can't find a team-mate and the visitors clear.
79'
Pyatov wins a free-kick after clashing with Sousa at a Portugal corner. He'll take his time with this one.
Minute
Description
76'
Júnior Moraes enters the game and replaces R. Yaremchuk.
Yaremchuk comes off for Moraes. He's making his international debut after only being given his Ukrainian passport last week.
Ronaldo beats his marker with a few stepovers and sends in a cross, but Stepanenko gets his head on it. It flies dangerously close to Ukraine's goal, but Pyatov's services aren't required.
73'
Dyego Sousa enters the game and replaces André Silva.
Santos opts to make another change, taking off Andre Silva to hand Sousa his debut.
72'
Again Portugal waste a good opportunity. Ronaldo tries to set up Carvalho at the edge of the box, though he spreads it wide to Bernardo Silva. The Manchester City midfielder then looks inside again instead of going for a shot. No one seems to want to pull the trigger.
68'
This could be dangerous. Ronaldo wins a free-kick in a threatening position after Konoplyanka sticks a foot in to try and tackle him.
Ronaldo stands over the dead ball with his legs wide, eying up the goal. It's actually Guerreiro that takes it, but the wall does their job and the effort takes a touch for a Portugal corner.
67'
V. Tsyhankov enters the game and replaces Marlos.
Marlos comes off for Tsygankov, who is yet to score for his country.
66'
Rafa plays Guerreiro through on Portugal's left flank and he fires a cross towards Ronaldo, but the forward is tightly marked and Ukraine clear.
64'
Portugal work the ball all the way to Ukraine's box, but Zinchenko is in a good position to put his body in the way of Ronaldo's shot.
Konoplyanka feeds Mykolenko on the left, but the left-back's cross is poor and Pepe clears to begin a Portugal counter-attack.
62'
Rafa enters the game and replaces Rúben Neves.
Neves has not been at the races and he makes way for Rafa, who earns his 14th cap at his home stadium.
61'
Ukraine have a chance to counter through Zinchenko and he feeds Yaremchuk, but no one is up in support and Portugal win the ball back.
54'
Bernardo Silva tries to dance his way through a crowd of Ukrainian defenders, but he doesn't get a shot away and Zinchenko gets back to tackle his Manchester City team-mate.
53'
Portugal have another corner - their ninth of the game - but again they can't capitalise on a prime opportunity to get the ball onto Ronaldo's head.
51'
Andre Silva comes close to opening the scoring, but Pyatov gets down to make a relatively easy save. Ronaldo did well in the build-up to chest Pepe's pass into Andre Silva's path, but the resulting shot wasn't the best.
50'
Moutinho delivers a free-kick deep into Ukraine's box, but Pyatov is again on hand to touch it away and relieve the danger.
46'
The action resumes at the Estadio da Luz with Ukraine in possession.
45' +2
HALF-TIME: PORTUGAL 0-0 UKRAINE.
45'
Guerreiro tries to find Ronaldo with a cross from the left flank, but Mykolenko clears all the way to Portugal's back four.
42'
Carvalho tries to find Cancelo out on the right with a short pass, but Mykolenko is very quick to make the tackle and win the ball cleanly. Cancelo is in a bit of pain following the challenge, though he'll continue without a problem.
40'
Guerreiro has done well to win the ball back off Marlos deep into Ukrainian territory and he passes to Ronaldo, but the forward is looking for the shot and he doesn't have enough space to get it away.
39'
Portugal win a free-kick and Matvyenko receives a stern talking to from the referee after clashing with Andre Silva.
36'
Bernardo Silva very nearly barges and dances his way through into the box, but he loses possession and Ukraine now have a chance to start a counter. Zinchenko plays an excellent pass into Marlos and Cancelo decides to foul the winger to give away a free-kick.
30'
Mykolenko has had to do a lot of defending, but he finds a moment to demonstrate his attacking skill with a run into Portugal's box, though he eventually loses the ball and gives away a free-kick for a foul on Pepe.
26'
Although Portugal have started well, particularly Cancelo on the right, the passing from midfield has been quite poor. Moutinho and Neves, especially, haven't found their rhythm in their long passing.
23'
Ronaldo is down clutching his ankle and the stadium falls silent, but he's up quickly again after a 50-50 challenge for the ball.
21'
Ukraine are looking quite dangerous on the break. Konoplyanka is the latest to threaten the Portugal defence as he cuts inside and fires a shot towards Patricio's goal, but it's off target. There were numbers in the box and he perhaps should have tried to find a team-mate.
19'
Neves is trying to find Cancelo on the right side of the box with a floated pass, but it's not accurate and Pyatov can comfortably claim it. It's not been the best start by the Wolves midfielder so far.
15'
Bernardo Silva finds himself with a lot of space at the edge of a box from a short Portugal corner and he tries to float a pass into Pepe, but Ukraine defend and the hosts win another corner.
13'
Konoplyanka has a great chance to create something for Ukraine as he's one-on-one against Pepe in a wide position, but the veteran centre-back is able to defend the attempted cross and clear it for a throw.
11'
Ronaldo is in a good position on the right flank, but referee Clement Turpin says he used his hand to control the ball and Ukraine have a free-kick deep in their own territory.
9'
Pyatov takes no chances with Guerreiro's cross and punches it out, though he could have caught it. It puts Ukraine on the back foot and under pressure in their own defensive third.
7'
Guerreiro has done well down the left flank and cuts it back to Moutinho. It looked as though he was getting ready to strike the ball, but instead tries to find Andre Silva's run in behind with a pass over the top, but it drifts out for a goal-kick.
5'
Ronaldo has a chance to launch a counter from a Ukraine corner, but Malinovskiy matches him for pace and brushes him aside to win back possession in the middle of the pitch.
4'
Teenager Mykolenko could be in for a difficult game against Portugal as he'll have to defend not just against Bernardo Silva, but Cancelo too. The Juventus right-back likes to get forward and his base position is particularly advanced so far.
2'
Andre Silva is nearly in with a chance on goal as Moutinho played him in behind with a throughball, but he's flagged offside.
1'
Action is underway at the Estadio da Luz as Portugal kick off.
Hello and welcome to our live coverage of the Euro 2020 qualifier between defending champions Portugal and Ukraine.
Portugal can qualify for Euro 2020 directly through the Nations League in June, but Fernando Santos won’t want to take any chances with his title holders as they seek to become only the second side to retain the European Championship.
PORTUGAL XI (4-3-3): Rui Patricio; Joao Cancelo, Pepe, Ruben Dias, Raphael Guerreiro; Ruben Neves, William Carvalho, Joao Moutinho; Bernardo Silva, Andre Silva, Cristiano Ronaldo.
SUBS: Jose Fonte, Nelson Semedo, Danilo Pereira, Joao Felix, Pizzi, Jose Sa, Mario Rui, Diogo Jota, Beto, Dyego Sousa, Rafa, Joao Mario.
UKRAINE XI (4-1-4-1): Andriy Pyatov; Oleksandr Karavaev, Sergey Krivtsov, Mykola Matvyenko, Vitaliy Mykolenko; Taras Stepanenko; Marlos, Ruslan Malinovskiy, Oleksandr Zinchenko, Yevhen Konoplyanka; Roman Yaremchuk.
SUBS: Andriy Lunin, Eduard Sobol, Artem Kravets, Roman Bezus, Viktor Tsygankov, Mykola Shaparenko, Mykyta Burda, Bogdan Butko, Vitaliy Buyalskiy, Moraes, Denys Boyko, Serhiy Sydorchuk.
The teams are out, the anthems are being sung and we’re moments away from kick-off.
It's back to the drawing board for Santos ahead of Portugal's next qualifier against Serbia on Monday. For Shevchenko, he'll be delighted with a well-earned point away from home and will hope Ukraine can build on this momentum when they travel to Luxembourg in their next game.
That's all from us as Portugal draw 0-0 with Ukraine in the opening round of Euro 2020 qualifiers. Thank you and goodbye!
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